Jen M. and Kelly duke it out on the three-hour finale of “The Apprentice” (7 p.m., NBC). OK, class, here’s your quiz: Three hours plus two contestants equals how many product placements? The biggest winner of the evening should be the recently created financial corporation that sponsors the charity polo match and basketball tournament.

When we last saw our intrepid contestants, Jen was ticking-off her client and Kelly was worrying about a rainstorm washing out his event. That’s a fitting setup, because it’s going to take a force of nature to keep Kelly from winning the job. Arguably the biggest question of the night is the number of fruit-colored slacks Raj will sport during the course of the show.

NBC will pad out the 180-minute job interview with plenty of glances at the past season and visits with discarded players. The O’Jays will also be on hand to perform their song “For the Love of Money.”

• Speaking of Donald Trump and the tight-fisted, grasping pursuit of money, the Cartoon Network presents the holiday classic “Mr. Magoo’s Christmas Carol” (7 p.m., Cartoon Network). “Magoo” isn’t the only classic animated Christmas special tonight. Linus teaches the “Peanuts” gang the true meaning of the holiday in the 1965 “A Charlie Brown Christmas” (7 p.m., ABC).

Tonight’s other highlights

• Barry Pepper stars in the 2004 Dale Earnhardt biography “3” (6 p.m., ESPN).
• Suddenly revealed secrets scuttle the Christmas-Hanukkah celebration at the Cohens’ on “The O.C.” (7 p.m., Fox).
• Jon Voight, Ellen Burstyn, Jeff Daniels and Michael Imperioli star in the 2004 weepy “The Five People You Meet in Heaven” (7 p.m., Family).

Late night

Kate Beckinsale, Ciara and Missy Elliott appear on “Late Show with David Letterman” (10:35 p.m., CBS) … Jay Leno hosts Michael Keaton, Chelsea Handler and Sawyer Brown featuring Robert Randolph on “The Tonight Show” (10:35 p.m., NBC).